Our trio combo protector uses the patented Nano biomimetic technology and degrade diatomic earth, it consists of three layers, can kill all stages of bedbugs and prevent them come from other places.  

First layer is mattress protector that can be installed as a common zipped mattress cover, you can put your sheet on it.  it is breathable polyester vinyl-free, waterproof,  and protecting the mattress from allergy, bedbugs, dust mites, bacterial.

Second layer is bed headboard and footboard protector, it can isolate all the infection source,  interceptor, capture and kill remain bedbugs (bed bugs contaminating the diatoms earth will paralyze and die in several days) . If your bed has headboard and footboard, you perhaps need two pieces of second layer.

Third layer is multiple prose fabric with electrostatic and nano diatomic earth, it can cover the whole bed frame to kill all the bugs hiding inside the frame and box support, prevent bedbugs coming back from other places in your apartment or other apartment.